metrcis输出

package mainimport (	"github.com/prometheus/client_golang/prometheus")//Define a struct for you collector that contains pointers//to prometheus descriptors for each metric you wish to expose.//Note you can also include fields of other types if they provide utility//but we just won't be exposing them as metrics.type fooCollector struct {
     	fooMetric *prometheus.Desc	barMetric *prometheus.Desc}//You must create a constructor for you collector that//initializes every descriptor and returns a pointer to the collectorfunc newFooCollector() *fooCollector {
     	return &fooCollector{
     		fooMetric: prometheus.NewDesc("foo_metric",			"Shows whether a foo has occurred in our cluster",			nil, nil,		),		barMetric: prometheus.NewDesc("bar_metric",			"Shows whether a bar has occurred in our cluster",			nil, nil,		),	}}//Each and every collector must implement the Describe function.//It essentially writes all descriptors to the prometheus desc channel.func (collector *fooCollector) Describe(ch chan<- *prometheus.Desc) {
     	//Update this section with the each metric you create for a given collector	ch <- collector.fooMetric	ch <- collector.barMetric}//Collect implements required collect function for all promehteus collectorsfunc (collector *fooCollector) Collect(ch chan<- prometheus.Metric) {
     	//Implement logic here to determine proper metric value to return to prometheus	//for each descriptor or call other functions that do so.	var metricValue float64	if 1 == 1 {
     		metricValue = 1	}	//Write latest value for each metric in the prometheus metric channel.	//Note that you can pass CounterValue, GaugeValue, or UntypedValue types here.	ch <- prometheus.MustNewConstMetric(collector.fooMetric, prometheus.CounterValue, metricValue)	ch <- prometheus.MustNewConstMetric(collector.barMetric, prometheus.CounterValue, metricValue)}

http输出

package mainimport (  "net/http"  log "github.com/Sirupsen/logrus"  "github.com/prometheus/client_golang/prometheus"  "github.com/prometheus/client_golang/prometheus/promhttp")func main() {
       //Create a new instance of the foocollector and   //register it with the prometheus client.  foo := newFooCollector()  prometheus.MustRegister(foo)  //This section will start the HTTP server and expose  //any metrics on the /metrics endpoint.  http.Handle("/metrics", promhttp.Handler())  log.Info("Beginning to serve on port :8080")  log.Fatal(http.ListenAndServe(":8080", nil))}

单文件

package mainimport (	log "github.com/Sirupsen/logrus"	"github.com/prometheus/client_golang/prometheus"	"github.com/prometheus/client_golang/prometheus/promhttp"	"net/http")//Define a struct for you collector that contains pointers//to prometheus descriptors for each metric you wish to expose.//Note you can also include fields of other types if they provide utility//but we just won't be exposing them as metrics.type fooCollector struct {
     	fooMetric *prometheus.Desc	barMetric *prometheus.Desc}//You must create a constructor for you collector that//initializes every descriptor and returns a pointer to the collectorfunc newFooCollector() *fooCollector {
     	return &fooCollector{
     		fooMetric: prometheus.NewDesc("fff_metric",			"Shows whether a foo has occurred in our cluster",			nil, nil,		),		barMetric: prometheus.NewDesc("bbb_metric",			"Shows whether a bar has occurred in our cluster",			nil, nil,		),	}}//Each and every collector must implement the Describe function.//It essentially writes all descriptors to the prometheus desc channel.func (collector *fooCollector) Describe(ch chan<- *prometheus.Desc) {
     	//Update this section with the each metric you create for a given collector	ch <- collector.fooMetric	ch <- collector.barMetric}//Collect implements required collect function for all promehteus collectorsfunc (collector *fooCollector) Collect(ch chan<- prometheus.Metric) {
     	//Implement logic here to determine proper metric value to return to prometheus	//for each descriptor or call other functions that do so.	var metricValue float64	if 1 == 1 {
     		metricValue = 1	}	//Write latest value for each metric in the prometheus metric channel.	//Note that you can pass CounterValue, GaugeValue, or UntypedValue types here.	ch <- prometheus.MustNewConstMetric(collector.fooMetric, prometheus.CounterValue, metricValue)	ch <- prometheus.MustNewConstMetric(collector.barMetric, prometheus.CounterValue, metricValue)}func main() {
     	//Create a new instance of the foocollector and	//register it with the prometheus client.	foo := newFooCollector()	prometheus.MustRegister(foo)	//This section will start the HTTP server and expose	//any metrics on the /metrics endpoint.	http.Handle("/metrics", promhttp.Handler())	log.Info("Beginning to serve on port :8080")	log.Fatal(http.ListenAndServe(":8080", nil))}